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CVE-2026-24308

Medium priority
Needs evaluation

Improper handling of configuration values in ZKConfig in Apache ZooKeeper 3.8.5 and 3.9.4 on all platforms allows an attacker to expose sensitive information stored in client configuration in the client's logfile. Configuration...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-24281

Medium priority
Needs evaluation

Hostname verification in Apache ZooKeeper ZKTrustManager falls back to reverse DNS (PTR) when IP SAN validation fails, allowing attackers who control or spoof PTR records to impersonate ZooKeeper servers or clients with a valid...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2025-58457

Medium priority
Needs evaluation

Improper permission check in ZooKeeper AdminServer lets authorized clients to run snapshot and restore command with insufficient permissions. This issue affects Apache ZooKeeper: from 3.9.0 before 3.9.4. Users are recommended to...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2024-51504

Medium priority
Vulnerable

When using IPAuthenticationProvider in ZooKeeper Admin Server there is a possibility of Authentication Bypass by Spoofing -- this only impacts IP based authentication implemented in ZooKeeper Admin Server. Default configuration of...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Vulnerable Not affected Not affected Not affected
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CVE-2024-23944

Medium priority
Vulnerable

Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Vulnerable Not affected Not affected Not affected
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CVE-2023-44981

Medium priority
Fixed

Authorization Bypass Through User-Controlled Key vulnerability in Apache ZooKeeper. If SASL Quorum Peer authentication is enabled in ZooKeeper (quorum.auth.enableSasl=true), the authorization is done by verifying that the instance...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Fixed Fixed Fixed
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CVE-2019-0201

Low priority

Some fixes available 2 of 5

An issue is present in Apache ZooKeeper 1.0.0 to 3.4.13 and 3.5.0-alpha to 3.5.4-beta. ZooKeeper’s getACL() command doesn’t check any permission when retrieves the ACLs of the requested node and returns all information contained...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Not affected Not affected Not affected
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CVE-2018-8012

Medium priority

Some fixes available 1 of 2

No authentication/authorization is enforced when a server attempts to join a quorum in Apache ZooKeeper before 3.4.10, and 3.5.0-alpha through 3.5.3-beta. As a result an arbitrary end point could join the cluster and begin...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Not affected Not affected Not affected
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CVE-2017-5637

Medium priority

Some fixes available 2 of 5

Two four letter word commands "wchp/wchc" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests. Apache ZooKeeper thru...

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Not affected Not affected Not affected
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CVE-2016-5017

Low priority

Some fixes available 2 of 6

Buffer overflow in the C cli shell in Apache Zookeeper before 3.4.9 and 3.5.x before 3.5.3, when using the "cmd:" batch mode syntax, allows attackers to have unspecified impact via a long command string.

1 affected package

zookeeper

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
zookeeper Not affected Not affected Not affected
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